   * {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
     font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
   }

   :root {
     --primary-green: #28a745;
     --primary-blue: #1e88e5;
     --primary-orange: #ff9800;
     --primary-red: #e53935;
     --light-bg: #f8f9fa;
     --card-bg: #ffffff;
     --text-dark: #2c3e50;
     --text-medium: #555;
     --text-light: #777;
     --chart-green: #66bb6a;
     --chart-blue: #42a5f5;
     --chart-red: #ef5350;
     --chart-orange: #ffa726;
     --shadow-light: 0 3px 12px rgba(0, 0, 0, 0.06);
     --shadow-medium: 0 6px 25px rgba(0, 0, 0, 0.1);
   }

   body {
     background-color: var(--light-bg);
     color: var(--text-dark);
     line-height: 1.6;
     background: linear-gradient(135deg, #f8f9fa 0%, #eef7f8 100%);
     min-height: 100vh;
     padding: 20px;
   }

   .container {
     max-width: 1200px;
     margin: 0 auto;
   }

   /* 顶部导航栏 */
   .header {
     background-color: var(--card-bg);
     box-shadow: var(--shadow-light);
     position: sticky;
     top: 0;
     left: 0;
     right: 0;
     z-index: 100;
     padding: 15px 0;
     border-radius: 0 0 15px 15px;
   }

   .nav-container {
     display: flex;
     align-items: center;
     justify-content: space-between;
     max-width: 1200px;
     margin: 0 auto;
     padding: 0 20px;
   }

   .logo {
     display: flex;
     align-items: center;
     text-decoration: none;
   }

   .logo-icon {
     color: var(--primary-green);
     font-size: 28px;
     margin-right: 10px;
   }

   .logo-text {
     font-weight: 800;
     font-size: 28px;
     color: var(--text-dark);
     letter-spacing: 0.5px;
   }

   .logo-text span {
     color: var(--primary-green);
   }

   .nav-links {
     display: flex;
     gap: 30px;
   }

   .nav-link {
     text-decoration: none;
     color: var(--text-medium);
     font-size: 18px;
     font-weight: 600;
     transition: all 0.3s ease;
     display: flex;
     align-items: center;
     gap: 8px;
     padding: 10px 20px;
     border-radius: 30px;
   }

   .nav-link:hover {
     background-color: rgba(40, 167, 69, 0.08);
     transform: translateY(-3px);
     color: var(--primary-green);
   }

   .nav-link.active {
     background-color: rgba(40, 167, 69, 0.15);
     color: var(--primary-green);
     box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
   }



   /* 健康数据页面样式 */
   .health-data-page {
     background: linear-gradient(to bottom, #e8f5e9, #f1f8e9);
     min-height: 100vh;
     padding: 100px 0 60px;
     border-radius: 20px;
     box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
     margin-top: 30px;
   }

   .health-container {
     max-width: 1200px;
     margin: 0 auto;
     background: white;
     border-radius: 25px;
     box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
     overflow: hidden;
   }

   .health-header {
     background: linear-gradient(90deg, var(--primary-green), #2ecc71);
     color: white;
     padding: 35px 40px;
     display: flex;
     align-items: center;
     justify-content: space-between;
   }

   .health-title {
     font-size: 36px;
     font-weight: 700;
   }

   .back-btn {
     background: rgba(255, 255, 255, 0.2);
     color: white;
     border: none;
     padding: 15px 30px;
     border-radius: 30px;
     cursor: pointer;
     font-size: 18px;
     font-weight: 600;
     display: flex;
     align-items: center;
     gap: 12px;
     transition: all 0.3s;
     box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
   }

   .back-btn:hover {
     background: rgba(255, 255, 255, 0.3);
     transform: translateX(-5px);
   }

   .health-content {
     padding: 40px;
     display: grid;
     grid-template-columns: 300px 1fr;
     gap: 40px;
   }

   .personal-info {
     background: #f8f9ff;
     border-radius: 20px;
     padding: 30px;
     box-shadow: var(--shadow-light);
     position: relative;
     overflow: hidden;
   }

   .info-badge {
     position: absolute;
     top: 0;
     right: 0;
     background: linear-gradient(135deg, #4caf50, #2e7d32);
     color: white;
     padding: 8px 15px;
     font-size: 14px;
     font-weight: 600;
     border-radius: 0 0 0 10px;
   }

   .avatar-container {
     display: flex;
     flex-direction: column;
     align-items: center;
     margin-bottom: 30px;
     position: relative;
   }

   .avatar-placeholder {
     width: 160px;
     height: 160px;
     background: linear-gradient(45deg, #e0f7fa, #b2ebf2);
     border-radius: 50%;
     display: flex;
     align-items: center;
     justify-content: center;
     margin-bottom: 25px;
     font-size: 50px;
     color: #0097a7;
     border: 4px solid var(--primary-green);
     box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
   }

   .user-name {
     font-size: 28px;
     font-weight: 700;
     color: var(--text-dark);
     margin-bottom: 5px;
     text-align: center;
   }

   .user-age {
     font-size: 22px;
     color: var(--text-medium);
     text-align: center;
   }

   .info-section {
     margin-bottom: 35px;
     border-bottom: 1px solid rgba(0, 0, 0, 0.05);
     padding-bottom: 20px;
   }

   .info-section:last-child {
     border-bottom: none;
   }

   .section-title {
     font-size: 22px;
     font-weight: 600;
     color: var(--primary-green);
     margin-bottom: 20px;
     padding-bottom: 12px;
     border-bottom: 2px solid rgba(40, 167, 69, 0.3);
   }

   .info-item {
     margin-bottom: 18px;
     padding-left: 35px;
     position: relative;
     font-size: 18px;
   }

   .info-item i {
     position: absolute;
     left: 0;
     top: 3px;
     color: var(--primary-green);
     font-size: 22px;
   }

   .charts-container {
     display: flex;
     flex-direction: column;
     gap: 40px;
   }

   .chart {
     background: white;
     border-radius: 20px;
     box-shadow: var(--shadow-light);
     padding: 30px;
     transition: all 0.3s;
     position: relative;
     overflow: hidden;
   }

   .chart:hover {
     transform: translateY(-5px);
     box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
   }

   .chart-title {
     font-size: 24px;
     font-weight: 700;
     margin-bottom: 25px;
     color: var(--text-dark);
     display: flex;
     justify-content: space-between;
   }

   .chart-value {
     font-weight: 700;
     font-size: 24px;
   }

   .chart-content {
     height: 320px;
     position: relative;
   }







   /* 响应式设计 */
   @media (max-width: 992px) {
     .hero-content {
       flex-direction: column;
       height: auto;
     }

     .hero-text,
     .elder-photo {
       width: 100%;
       position: static;
     }

     .elder-photo {
       height: 500px;
       margin-top: 40px;
       transform: none;
       top: auto;
       right: auto;
       width: 100%;
     }

     .stats-container {
       flex-direction: column;
       gap: 25px;
     }

     .health-content {
       grid-template-columns: 1fr;
     }

     .personal-info {
       padding: 30px;
       margin-bottom: 30px;
     }

     .chart {
       padding: 25px;
     }

     .hero-title {
       font-size: 36px;
     }

     .health-title {
       font-size: 28px;
     }
   }

   @media (max-width: 768px) {
     .nav-container {
       flex-direction: column;
       gap: 15px;
     }

     .nav-links {
       width: 100%;
       justify-content: center;
       flex-wrap: wrap;
     }

     .hero {
       padding: 30px;
     }

     .hero-description {
       max-width: 100%;
       font-size: 18px;
     }

     .platform-slogan {
       font-size: 32px;
     }

     .slogan-sub {
       font-size: 20px;
     }

     .chart-content {
       height: 280px;
     }
   }

   /* 精准重建的图表样式 */
   .chart-canvas {
     width: 100%;
     height: 100%;
     position: relative;
     display: flex;
     flex-direction: column;
   }

   .chart-grid {
     flex: 1;
     position: relative;
     border-left: 2px solid #ddd;
     border-bottom: 2px solid #ddd;
   }

   .y-axis {
     position: absolute;
     left: -45px;
     top: 0;
     bottom: 0;
     width: 45px;
     display: flex;
     flex-direction: column;
     justify-content: space-between;
     padding-right: 5px;
     font-size: 16px;
     color: #666;
   }

   .y-label {
     text-align: right;
     transform: translateY(50%);
   }

   .x-axis {
     display: flex;
     justify-content: space-between;
     padding: 5px 0 0 45px;
     height: 35px;
     border-top: 1px solid #eee;
     color: #666;
     font-size: 16px;
   }

   .x-label {
     text-align: center;
     flex: 1;
   }

   .line-path {
     fill: none;
     stroke-width: 4;
     stroke-linecap: round;
     stroke-linejoin: round;
     transition: all 0.5s;
   }

   .data-point {
     position: absolute;
     width: 12px;
     height: 12px;
     border-radius: 50%;
     transform: translate(-50%, -50%);
     z-index: 10;
     border: 3px solid white;
     box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
     transition: all 0.3s;
   }

   .point-label {
     position: absolute;
     font-size: 14px;
     font-weight: 600;
     background: rgba(255, 255, 255, 0.95);
     padding: 6px 10px;
     border-radius: 6px;
     box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
     transform: translateX(-50%);
     z-index: 20;
     white-space: nowrap;
     transition: all 0.3s;
   }

   /* 网格线 */
   .grid-line {
     position: absolute;
     left: 0;
     right: 0;
     height: 1px;
     background: rgba(0, 0, 0, 0.05);
   }

   /* 图表颜色样式 */
   .trend-chart .line-path {
     stroke: var(--chart-orange);
     stroke-width: 4;
   }

   .trend-chart .data-point {
     background-color: var(--chart-orange);
   }

   .trend-chart .point-label {
     color: var(--chart-orange);
   }

   .trend-chart .chart-value {
     color: var(--chart-orange);
   }

   .oxygen-chart .line-path {
     stroke: var(--chart-blue);
     stroke-width: 4;
   }

   .oxygen-chart .data-point {
     background-color: var(--chart-blue);
   }

   .oxygen-chart .point-label {
     color: var(--chart-blue);
   }

   .oxygen-chart .chart-value {
     color: var(--chart-blue);
   }

   .sugar-chart .line-path {
     stroke: var(--chart-red);
     stroke-width: 4;
   }

   .sugar-chart .data-point {
     background-color: var(--chart-red);
   }

   .sugar-chart .point-label {
     color: var(--chart-red);
   }

   .sugar-chart .chart-value {
     color: var(--chart-red);
   }

   /* 响应式设计 */
   @media (max-width: 992px) {
     .hero-content {
       flex-direction: column;
       height: auto;
     }

     .hero-text,
     .elder-photo {
       width: 100%;
       position: static;
     }

     .elder-photo {
       height: 500px;
       margin-top: 40px;
       transform: none;
       top: auto;
       right: auto;
       width: 100%;
     }

     .stats-container {
       flex-direction: column;
       gap: 25px;
     }

     .health-content {
       grid-template-columns: 1fr;
     }

     .personal-info {
       padding: 30px;
       margin-bottom: 30px;
     }

     .chart {
       padding: 25px;
     }

     .hero-title {
       font-size: 36px;
     }

     .health-title {
       font-size: 28px;
     }
   }

   @media (max-width: 768px) {
     .nav-container {
       flex-direction: column;
       gap: 15px;
     }

     .nav-links {
       width: 100%;
       justify-content: center;
       flex-wrap: wrap;
     }

     .hero {
       padding: 30px;
     }

     .hero-description {
       max-width: 100%;
       font-size: 18px;
     }

     .platform-slogan {
       font-size: 32px;
     }

     .slogan-sub {
       font-size: 20px;
     }

     .chart-content {
       height: 280px;
     }
   }

   /* 动画 */
   @keyframes fadeIn {
     from {
       opacity: 0;
       transform: translateY(20px);
     }

     to {
       opacity: 1;
       transform: translateY(0);
     }
   }

   .fade-in {
     animation: fadeIn 0.8s ease;
   }

   /* 图表浮动效果 */
   .chart:hover .point-label {
     transform: translate(-50%, -10px);
     box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
   }